Wyoming Oversize Load Permit Requirements
Legal truck dimensions, oversize load travel hours, pilot car and escort requirements, and how to order an oversize/overweight permit from Wyoming Highway Patrol / WYDOT Commercial Carrier (Permits).
WY, reviewed October 2026
Check your load for Wyoming
Oversize permit required in Wyoming
- Width 10 ft 0 in exceeds the 8 ft 6 in legal limit.
No width-based pilot car at 10 ft 0 in wide.
Wyoming Truck Legal Width, Height & Length
A truck and load at or under these dimensions can travel Wyoming highways without an oversize permit. Exceed any one of them and you need a permit before you move.
| Legal width | 8 ft 6 in |
|---|---|
| Legal height | 14 ft 0 in |
| Legal length | Single unit or semitrailer 60 ft; tractor with semitrailer/trailer combination 81 ft (48 ft semitrailer + 40 ft trailer max); any other combination 85 ft; maximum three single vehicles in a combination. |
| Gross weight | 80,000 lbs |
Wyoming Oversize Load Travel Hours
- Daily movement window
- Daylight hours only, except legal-height, permitted, signed and lighted: single units 60-75 ft, combinations under 100 ft where the single unit exceeds 60 ft, and loads up to 10 ft wide on Interstates may move at night.
- Weekend movement
- No general weekend restriction stated on the WHP commercial carrier page; holiday weekends are restricted for loads needing escorts.
- Holiday restrictions
- Movements requiring escorts are not permitted on New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas, or the associated holiday weekends. Start and end times are not specified on the page. See this year's holiday dates for all states.
Wyoming Pilot Car Requirements
Escorts are required on Interstate and four-lane divided highways at 15 ft wide or more; on two-lane highways at 14 ft wide, 110 ft long, or when crossing the center line; rear overhang of 25 ft or more needs an escort on all highways.
| First pilot car (width) | 15 ft 0 in wide and over |
|---|---|
| Two pilot cars (width) | Not confirmed: check your permit conditions |
| Height-pole escort | Not confirmed: check your permit conditions |
| Length escort | 110 ft 0 in long and over |
Wyoming pilot car requirements by load width and height. Crossing a border? Compare with Montana, Nebraska, South Dakota, Utah.
How to order a Wyoming oversize permit
Wyoming Highway Patrol / WYDOT Commercial Carrier (Permits)
Overweight as well? Check axle limits with the bridge formula calculator.
Crossing Wyoming without Wyoming apportioned plates? Estimate the temporary trip permit cost with the trip permit cost estimator.
Wyoming Oversize Load FAQs
- What are the oversize load travel hours in Wyoming?
- Daylight hours only, except legal-height, permitted, signed and lighted: single units 60-75 ft, combinations under 100 ft where the single unit exceeds 60 ft, and loads up to 10 ft wide on Interstates may move at night. Weekends: No general weekend restriction stated on the WHP commercial carrier page; holiday weekends are restricted for loads needing escorts.
- When is a pilot car required in Wyoming?
- Escorts are required on Interstate and four-lane divided highways at 15 ft wide or more; on two-lane highways at 14 ft wide, 110 ft long, or when crossing the center line; rear overhang of 25 ft or more needs an escort on all highways.
- What is the legal truck width in Wyoming?
- The standard legal width in Wyoming is 8 ft 6 in (102 inches), the federal minimum width allowed on the National Network of highways. A load wider than that needs an oversize permit.
- How tall can a truck be in Wyoming without a permit?
- The legal height limit in Wyoming is 14 ft 0 in, measured from the road surface to the highest point of the vehicle or load. Taller loads need an oversize permit and a surveyed route for bridge and wire clearances.
- Can oversize loads move on holidays in Wyoming?
- Movements requiring escorts are not permitted on New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas, or the associated holiday weekends. Start and end times are not specified on the page.
- How do I get an oversize or overweight permit in Wyoming?
- Apply through Wyoming Highway Patrol / WYDOT Commercial Carrier (Permits) ((307) 777-4376) or its online permit portal. Have your USDOT number, vehicle and load dimensions, axle weights and route ready. Permit expediting agents can file on your behalf if you need the permit the same day.
Regulations change. This page summarises published Wyoming rules as reviewed October 2026 and is not legal advice; the conditions printed on your permit control. Note: Statutory gross weight per WHP page: Interstate 117,000 lbs (Table I bridge formula); Primary and Secondary highways 80,000 lbs (Table II) or 117,000 by formula; legalGrossWeightLbs set to 117,000 for that reason, verify before displaying as the generic 80,000 limit. Escort for height on all highways and for length on Interstates is at discretion of the approving authority, so heightPoleFt is null. Permit fees: non-divisible oversize $25 plus $0.03 per foot per mile beyond 15 ft wide/15 ft high/75 ft long; non-divisible overweight $40 minimum plus $0.06 per ton-mile. Loads within 18 ft wide, 17 ft high, 120 ft long, 160,000 lbs GVW can be cleared via Port of Entry or highway shop; larger via the overweight loads office. Oversize Load signs front and rear required.